Wow, that is a beautiful piece.
Tissot is a lower-tier brand owned by the Swatch group. Generally, their watches feature stock ETA movements in good, no-thrills cases. A similar brand might be Hamilton, also owned by Swatch, though they offer very different aesthetics. IMO, both are very high value-for-money watches.
Make sure you maintain the watch regularly by bringing it a good repairman every five years ago. Congratulations on graduating!